package com.sichen.auth.controller;

import com.alibaba.fastjson2.TypeReference;
import com.sichen.auth.constant.GiteeConstant;
import com.sichen.auth.constant.UserLoginConstant;
import com.sichen.auth.feign.MemberFeignService;
import com.sichen.auth.feign.ThirdPartFeignService;
import com.sichen.auth.vo.UserLoginVo;
import com.sichen.auth.vo.UserRegistVo;
import com.sichen.common.constant.AuthServerConstant;
import com.sichen.common.exception.BizCodeEnum;
import com.sichen.common.utils.R;
import com.sichen.common.vo.MemberRespVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import org.thymeleaf.util.StringUtils;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * 登录的Controller
 * <p>Created with IntelliJ IDEA.
 * <p>Author: 思尘
 * <p>Created time: 2022-09-20 21:36
 * <p>Version: V1.0
 */
@Controller
public class LoginController {

    @Autowired
    ThirdPartFeignService thirdPartFeignService;

    @Autowired
    StringRedisTemplate stringRedisTemplate;

    @Autowired
    MemberFeignService memberFeignService;


    @ResponseBody
    @GetMapping("/sms/sendCode")
    public R sendCode(@RequestParam("phone") String phone) {

        //TODO 1.接口防刷 :

        // 防止同一个phone在60秒内再次发送验证码
        String redisCode = stringRedisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_REDIS_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l < 60000) {
                // 60秒内不能再发
                return R.error(BizCodeEnum.SMS_CODE_EXCEPTION.getCode(), BizCodeEnum.SMS_CODE_EXCEPTION.getMessage());
            }
        }
        // 2.验证码的再次校验 , redis , key-phone: sms:code:phone , value-code: 随机生成的验证码+系统当前时间:
        String code = UUID.randomUUID().toString().substring(0, 6);
        String codeValue = code + "_" + System.currentTimeMillis();
        stringRedisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_REDIS_PREFIX + phone, codeValue,
                10, TimeUnit.MINUTES);
        thirdPartFeignService.sendCode(phone, code);
        return R.ok();
    }

    /**
     * RedirectAttributes redirectAttributes : 模拟重定向携带数据
     *
     * @param vo
     * @param result
     * @param redirectAttributes
     * @return
     */
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result,
                         RedirectAttributes redirectAttributes) {
        if (result.hasErrors()) {
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
            redirectAttributes.addFlashAttribute("errors", errors);
            // 校验出错 , 转发到注册页面
            return "redirect:http://auth.sichen.com/reg.html";
        }
        // 1.校验验证码
        String code = vo.getCode();
        String s = stringRedisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_REDIS_PREFIX + vo.getPhone());
        if (!StringUtils.isEmpty(s)) {
            if (code.equals(s.split("_")[0])) {
                // 删除验证码 , 令牌机制
                stringRedisTemplate.delete(AuthServerConstant.SMS_CODE_REDIS_PREFIX + vo.getPhone());
                // 验证码通过 , 真正注册 , 调用远程服务进行注册
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0) {
                    // 成功
                    // 注册成功回到首页 , 回到登录页
                    return "redirect:http://auth.sichen.com/login.html";
                } else {
                    HashMap<String, String> errors = new HashMap<>();
                    errors.put("msg", r.getData("msg", new TypeReference<String>() {
                    }));
                    redirectAttributes.addFlashAttribute("errors", errors);
                    return "redirect:http://auth.sichen.com/reg.html";
                }
            } else {
                Map<String, String> errors = new HashMap<>();
                errors.put("code", "验证码输入错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                // 校验出错 , 转发到注册页面
                return "redirect:http://auth.sichen.com/reg.html";
            }
        } else {
            Map<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            // 校验出错 , 转发到注册页面
            return "redirect:http://auth.sichen.com/reg.html";
        }
    }

    @PostMapping("/login")
    public String login(UserLoginVo vo,RedirectAttributes redirectAttributes,
                        HttpSession session) {
        // 远程登录
        R login = memberFeignService.login(vo);
        if (login.getCode() == 0){
            // 成功
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {});
            session.setAttribute(GiteeConstant.GITEE_OAUTH_SESSION_KEY,data);
            return "redirect:http://sichen.com";
        } else {
            HashMap<String, String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg", new TypeReference<String>() {}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.sichen.com/login.html";
        }
    }

    @GetMapping("/login.html")
    public String loginPage(HttpSession session){
        Object attribute = session.getAttribute(UserLoginConstant.USER_LOGIN_SESSION_KEY);
        if (attribute == null){
            // 没有登录
            return "login";
        }else{
            return "redirect:http://sichen.com";
        }
    }
}
